Phases of Ice Quiz - Statistics

General Stats

Answer Stats

Year Discovered	Crystal form	(Stability) Temperature	Pressure	Phase	% Correct
1943	Diamond Cubic	-143 to -53°C	Atmospheric	Ic	100%
N/A	Hexagonal	0°C	Atmospheric	Ih	100%
1984	Amorphous	-196.2°C	1.6GPa	High-Density Amorphous	50%
1900	Rhombohedral	-196.2°C	300MPa	Ice II	50%
1900	Tetragonal	-196.2°C	300MPa	Ice III	50%
1900	Rhombohedral	-196.2°C	810MPa	Ice IV	50%
1968	Tetragonal	-133°C	200 to 400MPa	Ice IX	50%
1900s	Monoclinic	-20°C	500MPa	Ice V	50%
1912	Tetragonal	-143 to 82°C	1.1GPa	Ice VI	50%
1937	Cubic	82°C	2.2GPa	Ice VII	50%
1966	Tetragonal	5°C	2.1GPa	Ice VIII	50%
2022	Cubic	<-133°C	30 to 70GPa	Ice X	50%
1972	Orthorhombic	-201.2°C	N/A	Ice XI	50%
1996	Tetragonal	-13°C	0.55GPa	Ice XII	50%
2006	Monoclinic	-143°C	500MPa	Ice XIII	50%
2006	Orthorhombic	<-133°C	1.2GPa	Ice XIV	50%
2018	N/A	<-173°C	2GPa	Ice XIX	50%
2009	N/A	-193.2°C to -165°C	1.1GPa	Ice XV	50%
2014	N/A	<-133°C	1.2GPa	Ice XVI	50%
2016	Hexagonal	<-133°C	1.2GPa	Ice XVII	50%
2019	N/A	N/A	N/A	Ice XVIII	50%
2021	Cubic	627 to 1527°C	20 to 60GPa	Ice XX	50%
2025	Tetragonal	24.9°C	1.6GPa	Ice XXI	50%
1930s	Amorphous	N/A	Atmospheric or lower	Low-Density Amorphous	50%
2023	Amorphous	-200°C	N/A; requires shear force	Medium-Density Amorphous	50%
2025	Cubic	>196.9°C	>4GPa	Plastic Ice VII	50%
2014	Square	<-133°C	1.2GPa	Square	50%
1996	Amorphous	-196.2°C	2GPa	Very High-Density Amorphous	50%

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